55242577 has 4 divisors (see below), whose sum is σ = 59492020. Its totient is φ = 50993136.

The previous prime is 55242547. The next prime is 55242581. The reversal of 55242577 is 77524255.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16192576 + 39050001 = 4024^2 + 6249^2 .

It is a cyclic number.

It is not a de Polignac number, because 55242577 - 2¹¹ = 55240529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55242547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2124702 + ... + 2124727.

It is an arithmetic number, because the mean of its divisors is an integer number (14873005).

Almost surely, 2^55242577 is an apocalyptic number.

It is an amenable number.

55242577 is a deficient number, since it is larger than the sum of its proper divisors (4249443).

55242577 is a wasteful number, since it uses less digits than its factorization.

55242577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4249442.

The product of its digits is 98000, while the sum is 37.

The square root of 55242577 is about 7432.5350318717. The cubic root of 55242577 is about 380.8535223632.

The spelling of 55242577 in words is "fifty-five million, two hundred forty-two thousand, five hundred seventy-seven".